WASHINGTON, May 10 — A post-9/11 effort by the F.B.I. to concentrate on public corruption now includes more than 2,000 investigations under way, highlighted by the Jack Abramoff lobbying inquiry, the racketeering and fraud conviction of former Gov. George Ryan of Illinois, and the multipronged corruption probes after the guilty plea by Randy Cunningham, a former Republican House member from San Diego, bureau officials said.
As one of the Bush administration's least known anticrime efforts, the F.B.I. initiative has yielded an unexpectedly rich array of cases. The results suggest that wrongdoing by public officials at all levels of government is deeply rooted and widespread. Several of the highest profile cases in which the F.B.I. played an active role involve Republicans